Windkracht
1-3 = <10 kn / 19 km/h of minder
4 = 11-16 kn / 20 - 29 km/h
5 = 17-21 kn / 30 - 39 km/h
6 = 22-27 kn / 40 - 50 km/h
7 = 28-33 kn / 51 - 62 km/h
8 = 34-40 kn / 63 - 75 km/h
9 = 41-47 kn / 76 - 87 km/h
10 = 48-55 kn / 88 - 102 km/h
11 = 56-63 kn / 103 -117 km/h
12 = 64 kn of meer >118 km/h